Hey all-new to the forum, just got my ride into the garage at the new house after sitting for quite a while at parent's place. So far it's had new radiator, spark plugs, air pump and fuel pump put in.
1984 928S US
Looking forward to picking everybody's brains, so let's start now.
What is the little port-looking thing here? It looks like something should be plugged into it. Appreciate any help. Thanks!